[()]
[3, 2]
[6, 5, 4]
[7, 8, 9]
[13, 14, 15, 10, 11, 12]
[21, 20, 19, 16, 17, 18]
[]
[27]
[28]
[29]
[29]
[(State 30)]
[30]
15.89user 0.00system 0:15.90elapsed 99%CPU (0avgtext+0avgdata 35800maxresident)k
0inputs+0outputs (0major+4040minor)pagefaults 0swaps